Luth-AR Rifle Buffer Spring for A1/A2 AR-15 Receiver Extensions


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Magpul Moe Rifle Stock for AR-15

Magpul MOE Fixed Rifle Stock - AR-15 - MAG404


Rifle Buffer Spring for Fixed Stock AR-15

This rifle length recoil spring is a perfect replacement part for a worn-out recoil spring in an A1 or A2 style fixed stock build. Luth-AR manufactures high quality components to suit your rifle, and this spring is no exception; either as a low-cost replacement, or the start to a specialized precision build.

If you need a full buffer tube kit for a fixed rifle stock, you can find Luth-AR’s complete package with spring, tube, and buffer here.

Note: This recoil spring is meant for use in A1/A2 style buffer tubes, or with BCM’s MK2 receiver extension. Using this in a standard carbine buffer tube may damage your rifle!


  • Compatibility: AR-15
  • Length: 13 1/4″
  • Coils: 44

Have Questions About this Product?

The AT3 Tactical store has a 90 day no-hassle return policy for products in good condition. You can view the full details of our return policy here.

If you encounter an issue or defect with a product after 90 days of your purchase, you can refer to the manufacturer for a warranty claim. Their policies are below.

Luth-AR Limited Warranty

  • Luth-AR, LLC manufactured products are warranted for 1 (one) year from the date of purchase against manufacturing defects in material and/or workmanship. All parts and labor or replacement, at our option, are covered.
  • Government fees, damage caused by failure to perform normal maintenance, sales outside the United States, damage due to high velocity, high pressure, reloaded, or other non-standard ammunition, or any unauthorized repair, modification, misuse, abuse, or alteration of the product is not covered by this limited warranty.
  • Consumable items such as gas rings, O’ rings, etc., are not warranted.
  • Luth-AR, LLC complete assembled uppers will be warranted for a period of 1 (one) year after the complete upper was purchased.
  • The warranty applies towards defects in materials or workmanship of the complete upper. Luth-AR will pay for all warranty repairs, at no charge to the consumer. Please supply a copy of the invoice for proof of purchase.
  • The use of re-load ammunition, proof rounds, or factory ammunition that exceeds initial SAAMI specifications voids any warranty. Any repairs or modifications not done by Luth-AR also voids any warranty.
  • Complete uppers not assembled or built by Luth-AR are not covered by the 1 (one) year warranty.
  • Please call our warranty department at (763) 263-0166 or email for any warranty issues.

Disclaimer: Manufacturer’s warranty is subject to change without prior notice.